Flap driving device in particular for an adaptive nozzle

Abstract

A device is provided to drive flaps for an adaptive nozzle of a nacelle, and the adaptive nozzle includes at least one flap moveable in rotation and adapted to pivot toward a position causing a variation of a nozzle section. In particular, the device includes a control ring and a connecting rod driving the flaps. The control ring rotates along a circumference of the nacelle during a driving rod drives the control ring, and the connecting rod is connected to the control ring and one of the flaps so that the driving rod causes a displacement in translation of the connecting rod. The driving rod is connected to an assembly forming a lever, and the assembly is secured to the control ring.

What is claimed is: 
     
         1 . A device for driving flaps for an adaptive nozzle of a nacelle of a turbojet engine of an aircraft, said adaptive nozzle comprising at least one flap moveable in rotation and adapted to pivot at least towards a position causing a variation of a nozzle section, said device comprising:
 at least one control ring moveable in rotation along a circumference of said nacelle during activation of driving means configured to drive the control ring; and   at least one connecting rod driving the flaps, said connecting rod connected to said at least one control ring and at least one of the flaps, and the activation of said driving means causing a displacement in translation of said at least one connecting rod,   wherein said driving means comprise at least one longitudinal drive cylinder comprising at least one cylinder rod connected to at least one assembly forming a lever, and said at least one assembly is secured to said at least one control ring.   
     
     
         2 . The device for driving flaps according to  claim 1 , wherein said at least one assembly is connected to said at least one control ring by at least one moveable carriage shaped to translate in an oblong hole of said control ring. 
     
     
         3 . The device for driving flaps according to  claim 1 , wherein said at least one connecting rod is connected to said at least one assembly. 
     
     
         4 . The device for driving flaps according to  claim 1 , wherein said at least one assembly is an L-shaped assembly. 
     
     
         5 . The device for driving flaps according to  claim 1 , wherein said at least one assembly is a T-shaped assembly. 
     
     
         6 . The device for driving flaps according to  claim 1 , wherein the connection between said at least one cylinder rod of the longitudinal drive cylinder and said at least one assembly is a sliding connection. 
     
     
         7 . The device for driving flaps according to  claim 1 , wherein the connection between said at least one cylinder rod of the longitudinal drive cylinder and said at least one assembly is a pivot connection of vertical axis. 
     
     
         8 . The device for driving flaps according to  claim 1 , wherein the connection between said at least one connecting rod and said at least one assembly is a sliding connection. 
     
     
         9 . The device for driving flaps according to  claim 1 , wherein the connection between said at least one connecting rod and said at least one assembly is a pivot connection of vertical axis. 
     
     
         10 . The device for driving flaps according to  claim 1 , wherein said at least one cylinder rod of the longitudinal drive cylinder is connected to said at least one assembly by at least one moveable carriage. 
     
     
         11 . The device for driving flaps according to  claim 1 , wherein said at least one connecting rod is connected to said at least one assembly by at least one moveable carriage. 
     
     
         12 . The device for driving flaps according to  claim 1 , wherein said at least one control ring substantially extends over the entire circumference of the nacelle. 
     
     
         13 . The device for driving flaps according to  claim 1 , wherein said at least one control ring comprises a plurality of independent sections moveable in rotation along the circumference of the nacelle during the activation of the driving means. 
     
     
         14 . The device for driving flaps according to  claim 1 , wherein said at least one assembly of which an end is secured to a guiding pin shaped to translate in a hole inscribed on an outer face of said at least one control ring. 
     
     
         15 . The device for driving flaps according to  claim 1 , wherein said at least one assembly comprises first and second holes, said at least one cylinder rod being secured at an end to a guiding pin shaped to translate in the first hole, and the second hole receiving a guiding pin secured to an end of said at least one connecting rod. 
     
     
         16 . A thrust reverser for a nacelle of a turbojet engine of an aircraft comprising at least one downstream cowl comprising in downstream at least one adaptive nozzle comprising at least one flap alternatively moveable between a retracted position and a deployed position, wherein said at least one downstream cowl comprises at least one device driving said at least one flap of the nozzle according to  claim 1 . 
     
     
         17 . A nacelle of a turbojet engine of an aircraft comprising at least one thrust reverser according to  claim 16 .